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Название: Unusual Corrections to Scaling in the 3-State Potts Antiferromagnet on a Square Lattice
Авторы: Cardy J., Jacobsen J.L., Sokal A.D.
Journal of Statistical Physics, Vol. 105, Nos. 1/2, October 2001. p. 25-47.
At zero temperature, the 3-state antiferromagnetic Potts model on a square lattice maps exactly onto a point of the 6-vertex model whose long-distance behavior is equivalent to that of a free scalar boson. We point out that at nonzero temperature there are two distinct types of excitation: vortices, which are relevant with renormalization-group eigenvalue 1/2; and non-vortex unsatisfied bonds, which are strictly marginal and serve only to renormalize the stiffness coefficient of the underlying free boson...